Most of the lessons will accept what you don't immediately expect. I'm junior at BYU studying computer science and I'm just using Codecademy to learn JavaScript, so naturally I try to break everything. Many of the lessons will let you pass with nonsense such as the following for 28:

console.log("I finished my first course!");if(true);else;

If you're familiar with programming concepts, go ahead and try to see if you can cheat your way through some of the lessons. Certainly makes life a little less boring.